block 在本句怎么翻译

题目

block 在本句怎么翻译
Since they have often been in the organization for a long time,they frequently quote historical experence as an excuse to block change.
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答案

因为他们在工会里呆了很长时间,所以他们经常会引用历史经验作为托辞来概括总体变化.